Your intention is very noble, but it seems to be unneseccary.

According to this study Outcome of FeLV-infected cats in a large pet adoption program

Rates of feline infection with feline leukemia (FeLV) in the U.S. are estimated at around 3 percent, including approximately 60,000 shelter cats. Such cats are frequently euthanized following a single positive test for the virus even if they show no signs of illness.

If scientists were actively searching for cats with a resistance to FeLV, they would probably be able to find enough of them in shelters.

Your intention is very noble, but it seems to be unnecessary.

According to this study Outcome of FeLV-infected cats in a large pet adoption program

Rates of feline infection with feline leukemia (FeLV) in the U.S. are estimated at around 3 percent, including approximately 60,000 shelter cats. Such cats are frequently euthanized following a single positive test for the virus even if they show no signs of illness.

If scientists were actively searching for cats with a resistance to FeLV, they would probably be able to find enough of them in shelters.

Your intention is very noble, but it seems to be unneseccary.

According to this study Outcome of FeLV-infected cats in a large pet adoption program

Rates of feline infection with feline leukemia (FeLV) in the U.S. are estimated at around 3 percent, including approximately 60,000 shelter cats. Such cats are frequently euthanized following a single positive test for the virus even if they show no signs of illness.

If scientists were actively searching for cat swith a resistency to FeLV, they would probably be able to find enough of them in shelters.

Your intention is very noble, but it seems to be unneseccary.

According to this study Outcome of FeLV-infected cats in a large pet adoption program

Rates of feline infection with feline leukemia (FeLV) in the U.S. are estimated at around 3 percent, including approximately 60,000 shelter cats. Such cats are frequently euthanized following a single positive test for the virus even if they show no signs of illness.

If scientists were actively searching for cats with a resistance to FeLV, they would probably be able to find enough of them in shelters.